WO2020185015A1 - Procédé de traitement de données de balayage tridimensionnel pour la fabrication d'une prothèse dentaire - Google Patents

Procédé de traitement de données de balayage tridimensionnel pour la fabrication d'une prothèse dentaire Download PDF

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Publication number
WO2020185015A1
WO2020185015A1 PCT/KR2020/003475 KR2020003475W WO2020185015A1 WO 2020185015 A1 WO2020185015 A1 WO 2020185015A1 KR 2020003475 W KR2020003475 W KR 2020003475W WO 2020185015 A1 WO2020185015 A1 WO 2020185015A1
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WO
WIPO (PCT)
Prior art keywords
data
scan
image data
manufacturing
dental prosthesis
Prior art date
Application number
PCT/KR2020/003475
Other languages
English (en)
Korean (ko)
Inventor
장민호
이동훈
최원훈
송명우
김진수
Original Assignee
주식회사 메디트
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 주식회사 메디트 filed Critical 주식회사 메디트
Priority to EP20769460.5A priority Critical patent/EP3936082B1/fr
Priority claimed from KR1020200030751A external-priority patent/KR102442720B1/ko
Publication of WO2020185015A1 publication Critical patent/WO2020185015A1/fr
Priority to US17/472,589 priority patent/US20210401550A1/en

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C9/00—Impression cups, i.e. impression trays; Impression methods
    • A61C9/004—Means or methods for taking digitized impressions
    • A61C9/0046—Data acquisition means or methods
    • A61C9/0053—Optical means or methods, e.g. scanning the teeth by a laser or light beam
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C9/00—Impression cups, i.e. impression trays; Impression methods
    • A61C9/004—Means or methods for taking digitized impressions
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C13/00—Dental prostheses; Making same
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C13/00—Dental prostheses; Making same
    • A61C13/0003—Making bridge-work, inlays, implants or the like
    • A61C13/0004—Computer-assisted sizing or machining of dental prostheses
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C13/00—Dental prostheses; Making same
    • A61C13/08—Artificial teeth; Making same
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C13/00—Dental prostheses; Making same
    • A61C13/34—Making or working of models, e.g. preliminary castings, trial dentures; Dowel pins [4]
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C8/00—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T7/00—Image analysis
    • G06T7/0002—Inspection of images, e.g. flaw detection
    • G06T7/0012—Biomedical image inspection
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T7/00—Image analysis
    • G06T7/70—Determining position or orientation of objects or cameras
    • G06T7/73—Determining position or orientation of objects or cameras using feature-based methods
    • G06T7/74—Determining position or orientation of objects or cameras using feature-based methods involving reference images or patches
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T2207/00—Indexing scheme for image analysis or image enhancement
    • G06T2207/10—Image acquisition modality
    • G06T2207/10028—Range image; Depth image; 3D point clouds
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T2207/00—Indexing scheme for image analysis or image enhancement
    • G06T2207/30—Subject of image; Context of image processing
    • G06T2207/30004—Biomedical image processing
    • G06T2207/30036—Dental; Teeth

Definitions

  • the present invention relates to a 3D scan data processing method for manufacturing a dental prosthesis, in obtaining 3D scan data of an oral shape, while simultaneously performing a 3D scan in the oral cavity, aligning 3D scan data and digital data
  • the present invention relates to a method for processing 3D scanned data to manufacture dental prosthesis that determines an alignment state and provides final position alignment information.
  • the crown which is the final prosthesis, is covered on the custom abutment, so it is necessary to accurately measure the shape of the abutment in three dimensions.
  • a scan body whose shape and dimensions are determined in advance is mounted in the oral cavity instead of the abutment, and then measured with an oral scanner to identify the location information of the abutment and manufacture a prosthesis. You can also use the method.
  • the scan body is measured with an oral scanner, similar problems arise, such as angle limitation and measurement time required, as in measuring an abutment.
  • the obtaining of the image data may include obtaining a plurality of 2D images from a scanning unit of the 3D scanner and generating 3D image data based on the obtained 2D images. have.
  • reference data for the structure may be displayed on a library interface different from the scan interface.
  • a 3D model of the reference data for the structure selected from the step of selecting and allocating reference data for the structure required by the user and the step of selecting and allocating is selected on the scan interface. It may include placing in a location.
  • the reference data for the structure is any one of 3D CAD drawing data of the structure, 3D surface data converted from the drawing data, or feature point data extracted from the 3D CAD drawing data or the 3D surface data. I can.
  • the obtained image data and digital data are matched to obtain accurate data on the oral structure, and based on this, it is possible to easily manufacture a prosthesis. I can.
  • data on the oral structure can be easily obtained using only the data on the shape using digital data.
  • 5 to 7 are diagrams illustrating a library interface in which a 3D scan data processing method for manufacturing a dental prosthesis according to the present invention is performed.
  • 15 to 18 are diagrams illustrating a process of performing manual alignment when matching according to automatic alignment does not occur in the process of performing a 3D scan data processing method for manufacturing a dental prosthesis according to the present invention.
  • tooth number display button 122a tooth number display button
  • a structure C20 formed between the fixture C10 and the artificial tooth C30 inserted into the bone of the gum is required.
  • the structure C20 is a part that is connected to the fixture C10 and rises above the gum, and is coupled with a prosthesis, that is, an artificial tooth C30.
  • the structure C20 may include both an implanted fixture C10, a ready-made product made in advance according to the height of the gums, and a custom product made to fit the individual patient's gingival and tooth shape.
  • the 3D scanner may acquire raw data through a scan unit included in the scanner (S21).
  • the scanning unit includes at least one camera.
  • an imaging sensor connected to the camera may analyze the light and store it in the form of digital data.
  • raw data in a form in which the light received in the camera is initially stored may be two-dimensional image data of a plane.
  • a plurality of plane 2D image data is continuously acquired while the 3D scanner performs a scan.
  • 3D image data may be generated based on the acquired plurality of 2D image data (S22).
  • a 3D scanner needs to convert flat 2D image data into 3D 3D image data, and depth information is required for 2D 3D transformation. Depth information can be obtained through structured light that is irradiated toward the object.
  • the comparison between the reference data for the structure and the image data may include comparing the reference data and the shape information each of the image data has.
  • comparing the shape information may include comparing position information and axis information for each data in reference data and image data, but is not limited thereto, such as surface color information and surface curvature information.
  • Various pieces of information corresponding to the shape information can be compared.
  • the step of comparing the shape information (S40) and the step of aligning the position (S50) are repeatedly performed, if the difference decreases below the range set in the program, it is determined that the analysis result satisfies the end criterion, and the image Acquisition of data and alignment of positions may be terminated (S60). For example, when the image data including the scanned structure and the shape information of the reference data match 70% or more, it may be determined that additional image data acquisition, analysis, and position adjustment are unnecessary. In this case, the adjustment may be completed by ending image data acquisition.
  • FIGS. 12 to 14 are diagrams illustrating a process of performing a 3D scan data processing method for manufacturing a dental prosthesis according to the present invention.
  • complementary data 38 in which image data and reference data are combined may be formed, and errors according to measurement may be displayed on the surface of the image data in a plurality of predetermined patterns or colors.
  • the error display button 123 When the error display button 123 is activated, the error legend 150 is displayed, and an error between the image data and the reference data may be displayed according to a pattern or color displayed on the error legend 150.
  • the three-dimensional model 36 of the reference data is translated and rotated in parallel to correspond to the position of the scan body model 37 to form the supplemental data 38, a check is made on one side of the tooth number display button 122a. The user can be notified visually that the data has been supplemented in the form.
  • the number of reference points is not limited, and the number can be selected and used in consideration of the accuracy of alignment and speed of alignment comprehensively.
  • the supplementary data 38 is formed by moving and rotating the 3D model 36 of the reference data in parallel with the scan body model 37, and the tooth number display button 122a At one side, it is possible to visually notify the user that the data has been supplemented in the form of a check.

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  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Dentistry (AREA)
  • Epidemiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Optics & Photonics (AREA)
  • Medical Informatics (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Radiology & Medical Imaging (AREA)
  • Quality & Reliability (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)

Abstract

La présente invention concerne un procédé de traitement de données de balayage tridimensionnel pour la fabrication d'une prothèse dentaire, le procédé consistant : à identifier une position pour une procédure d'implant sur la base de données d'image sur une structure buccale ; et à générer des données d'image alignées par extraction, à partir d'une bibliothèque, de données correspondant à un balayage corporel ou d'un pilier prothétique, dont une partie seulement a été balayée, à remplacer une partie ou l'ensemble des données d'image par les données extraites, et à aligner une position et une direction des données d'image, où : une structure buccale peut être facilement identifiée à partir des données d'image obtenues par balayage d'une forme partielle uniquement ; en fournissant une rétroaction correspondant, un guide pour une mesure correcte subséquente peut être fourni ; et une prothèse peut être fabriquée plus rapidement en raison d'un temps de balayage réduit.
PCT/KR2020/003475 2019-03-12 2020-03-12 Procédé de traitement de données de balayage tridimensionnel pour la fabrication d'une prothèse dentaire WO2020185015A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP20769460.5A EP3936082B1 (fr) 2019-03-12 2020-03-12 Procédé de traitement de données de balayage tridimensionnel pour la fabrication d'une prothèse dentaire
US17/472,589 US20210401550A1 (en) 2019-03-12 2021-09-11 Method of processing three-dimensional scan data for manufacture of dental prosthesis

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
KR20190028137 2019-03-12
KR10-2019-0028137 2019-03-12
KR10-2020-0030751 2020-03-12
KR1020200030751A KR102442720B1 (ko) 2019-03-12 2020-03-12 치아 보철 제조를 위한 3차원 스캔 데이터 처리 방법

Related Child Applications (1)

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US17/472,589 Continuation US20210401550A1 (en) 2019-03-12 2021-09-11 Method of processing three-dimensional scan data for manufacture of dental prosthesis

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WO2020185015A1 true WO2020185015A1 (fr) 2020-09-17

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WO (1) WO2020185015A1 (fr)

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Publication number Priority date Publication date Assignee Title
US11367192B2 (en) 2019-03-08 2022-06-21 Align Technology, Inc. Foreign object filtering for intraoral scanning

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GB2552137A (en) * 2016-07-03 2018-01-17 Tarazi Eyal Systems and methods of automated control of in-situ preparation for prefabricated fixed dental prosthesis
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Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006175205A (ja) * 2004-11-24 2006-07-06 Advance Co Ltd 歯科製作物の三次元測定評価装置とその評価指導方法
KR101189550B1 (ko) * 2008-03-21 2012-10-11 아츠시 타카하시 3차원 디지털 확대경 수술지원 시스템
KR101915215B1 (ko) * 2014-05-07 2018-11-06 얼라인 테크널러지, 인크. 구강내 스캔 중 관심 구역의 식별
KR101631258B1 (ko) * 2015-05-28 2016-06-16 주식회사 디오 디지털 스캔바디를 이용한 3차원 구강컨펌모델 제조방법
KR101726706B1 (ko) * 2016-03-11 2017-04-13 주식회사 디오 디지털 라이브러리를 이용한 치과 임플란트용 보철물 제조방법

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